Originally Posted by ThePinkBrigadier
It's because Teemo is not suppose to be taken seriously... and he's fuzzy. Hell I lane with Sejuani, solo top, and I can dominate games anytime. here's a sample keep in mind I was playing ranked.
Sejuani can do well, her kit just needs a bit of buffing to prevent her from being outclassed.
What she needs is a bit more mobility. For a lady who's riding a boar, she's pretty slow. That makes it tough to proc her frost and permafrost on enemy units when they can just run away from you. If Riot would buff her movement speed and MAYBE her health a bit (since she needs to be in the line of fire to drop her CC), then she'd be even with the other solo tops and jungles.
As for Teemo not supposed to be taken seriously, there's been Teemo fan outcry for a serious Teemo skin. I mean, the rest of the Yordles have cool skins, so why can't Teemo? See the posts for Assassin Teemo and Teemo the Professional for examples of well-done, serious Teemo skins.